html {
    /* 页面丝滑的滚动 */
    scroll-behavior: smooth; 
}
#mySidenav {
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(180deg, hsla(0, 0%, 100%, 0) 46.2%, #fff), #def4ff;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
} 
#mySidenav a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 16px;
    color: #0CAEFE;
    display: block;
    transition: 0.3s;
    height: 36px;
    line-height: 36px;  
}
  
#mySidenav a:hover,
.offcanvas a:focus { 
    color: #333;
}
  
#mySidenav .closebtn {
    position: absolute;
    top: 0;
    right: 15px;
    font-size: 24px;
    margin-left: 50px;
}
  
#main {
    transition: all .5s;
    padding: 16px;
}
#main .top {
    font-family: '仿宋';
    font-size: 30px; 
    margin-bottom: 15px;
    cursor: pointer;
}
@media screen and (max-height: 450px) {
    #mySidenav {
      padding-top: 15px;
    }
    #mySidenav a {
      font-size: 18px;
    }
}
/* 菜单 */
/* .tabs {
    display: flex;
    padding-top: 10px;
}  */
.tabs .tabs-t{
    font-size: 14px;
    position: fixed;
    top: 120px;
    width: 160px;
    text-align: center;
    border-right: 1px solid #eee;
    cursor: pointer;
}
.tabs .tabs-t .tab-group {
    margin-bottom: 20px;
}
.tabs-t .tab-group .tab-group-t {
    font-size: 17px;
    line-height: 40px;
}
.tabs-t .tab-group .tab-group-i {
    color: #666;
    display: block;
    line-height: 40px;
}
.tabs-t .tab-group .tab-group-i:hover {
    color: #0CAEFE;
    transition: 0.5s;
}
.tabs-t .tab-group .tab-group-i.active {
    background-color: #DCF3FF;
    border-right: 2px solid #0CAEFE;
    color: #0CAEFE;
}
.tabs-content .bd-t {
   font-family: '楷体';
   font-size: 22px;
   display: flex;
   align-items: center;
}
.tabs-content .rank-book{
    margin-bottom: 35px;
}